@article {Roy:2001:0963-6897:609,
title = "Effect of Flow on the Detoxification Function of Rat Hepatocytes in a Bioartificial Liver Reactor",
journal = "Cell Transplantation",
parent_itemid = "infobike://cog/ct",
publishercode ="cog",
year = "2001",
volume = "10",
number = "7",
publication date ="2001-07-01T00:00:00",
pages = "609-614",
itemtype = "ARTICLE",
issn = "0963-6897",
eissn = "1555-3892",
url = "http://www.ingentaconnect.com/content/cog/ct/2001/00000010/00000007/ct240",
doi = "doi:10.3727/000000001783986332",
keyword = "Key words: Bioartificial liver; Cytochrome P4501A1",
author = "Roy, P. and Washizu, J. and Tilles, A.W. and Yarmush, M.L. and Toner, M.",
abstract = "Ethoxyresorufin-o-deethylation (EROD) can be used as a sensitive measure of hepatic detoxification function. In this study, we employed a fluorescence assay based on EROD to study the effect of varying Peclet number (or flow) on hepatic function in a microchannel flat-plate bioartificial liver (BAL) reactor containing a coculture of hepatocytes and fibroblasts. Static culture and reactor flow experiments established that: 1) a pseudo-steady-state detoxification rate could be attained at each Peclet number, 2) the steady-state detoxification rate increased nonlinearly with Peclet number (ranging from 167 to 2500), 3) the uptake rate of substrate was a linear function of cell surface substrate concentration (2 did not adversely affect hepatic function for at least 12 h. A convectiondiffusionreaction model supports the conclusion that increased convective mass transfer of substrate to the cell surface is the primary cause of the observed increase in EROD rate with Peclet number. Our results suggest that detoxification rates can be enhanced by an order of magnitude by choosing an appropriate Peclet number. For our bioreactor configuration, this optimum corresponds to a Peclet number range of 10002000 at a Damkohler number of 0.55. The usefulness of the mathematical model is discussed in the context of scale-up to a clinical BAL reactor for human application.",
}